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authorDavid S. Miller <davem@davemloft.net>2012-05-13 13:23:16 -0700
committerDavid S. Miller <davem@davemloft.net>2012-05-13 13:23:16 -0700
commit679bea5e438df70b5d4348fd2da4501aaeacebe0 (patch)
tree476c87af4c16b665d0f6bd8c3067f10b47507746 /arch/sparc/mm
parentf613914efcc566245cd605bde6943fb5c2cd4ba3 (diff)
downloadlinux-679bea5e438df70b5d4348fd2da4501aaeacebe0.tar.gz
sparc: Kill mmu_{un,}lockarea().
These were used on sun4c during floppy data transfers since on that chip we had to lock the cpu mappings into the TLB because we cannot take a TLB miss during the assembler floppy interrupt handler that does the data transfer. That is no longer necessary since we've removed sun4c support, thus this stuff can disappear completely. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/io-unit.c14
-rw-r--r--arch/sparc/mm/iommu.c11
2 files changed, 0 insertions, 25 deletions
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index fc58c3e917d..d175c0ae5e4 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -242,22 +242,8 @@ static void iounit_unmap_dma_area(struct device *dev, unsigned long addr, int le
}
#endif
-static char *iounit_lockarea(char *vaddr, unsigned long len)
-{
-/* FIXME: Write this */
- return vaddr;
-}
-
-static void iounit_unlockarea(char *vaddr, unsigned long len)
-{
-/* FIXME: Write this */
-}
-
void __init ld_mmu_iounit(void)
{
- BTFIXUPSET_CALL(mmu_lockarea, iounit_lockarea, BTFIXUPCALL_RETO0);
- BTFIXUPSET_CALL(mmu_unlockarea, iounit_unlockarea, BTFIXUPCALL_NOP);
-
BTFIXUPSET_CALL(mmu_get_scsi_one, iounit_get_scsi_one, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(mmu_get_scsi_sgl, iounit_get_scsi_sgl, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(mmu_release_scsi_one, iounit_release_scsi_one, BTFIXUPCALL_NORM);
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 07fc6a65d9b..349ba83f178 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -426,20 +426,9 @@ static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len
}
#endif
-static char *iommu_lockarea(char *vaddr, unsigned long len)
-{
- return vaddr;
-}
-
-static void iommu_unlockarea(char *vaddr, unsigned long len)
-{
-}
-
void __init ld_mmu_iommu(void)
{
viking_flush = (BTFIXUPVAL_CALL(flush_page_for_dma) == (unsigned long)viking_flush_page);
- BTFIXUPSET_CALL(mmu_lockarea, iommu_lockarea, BTFIXUPCALL_RETO0);
- BTFIXUPSET_CALL(mmu_unlockarea, iommu_unlockarea, BTFIXUPCALL_NOP);
if (!BTFIXUPVAL_CALL(flush_page_for_dma)) {
/* IO coherent chip */